Oracle Message NNO-00314 - error changing trace level from number to number, level change ignored

ERRORerror changing trace level from number to number, level change ignored
CAUSEthe server encountered an error while changing its trace level in response to a request from the Oracle Names control program.
ACTIONAn internal error not normally visible to the user. For further details, turn on tracing and restart the server. If the error persists, contact Worldwide Customer Support.